6. That she's been working out

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Whether her goal is to lose weight, get toned, build muscle, or just to look and feel healthier, you should support her commitment to working out and going to the gym. And when you start seeing the results of her fitness regimen in her body, you should definitely compliment her on it. Telling her that her body looks great could be an excellent aphrodisiac for her, which is a bonus for you.